How to reproduce:
1. Set “Windows display language”, “Country or region”, and the “Regional Format” to Turkish
2. Create and open a new Universal 3D project
3. Open Package Manager
4. Click on the “+“ dropdown menu
5. Click “Install package by name“
6. Type “com.unity.dt.app-ui” in the “Name“ field
7. Type “ 2.0.0-pre.6” in the “Version (optional)“ field
8. Click the “Install” button
9. Observe the console

Expected result: The package installs without errors
Actual result: The package fails to install and throws multiple errors

Reproducible with: 2.2.0-pre.1 (2023.1.0a1, 6000.0.57f1, 6000.2.3f1, 6000.3.0b1)
Not reproducible with: 2.1.1 (2023.1.0a1, 6000.0.57f1, 6000.2.3f1, 6000.3.0b1)
Fixed in: 2.0.0-pre.7 (2023.1.0a1, 6000.0.57f1, 6000.2.3f1, 6000.3.0b1)

Reproducible on: Windows 11
Not reproducible on: No other environment tested

Note:
The error messages after installing the package:
{{EnumToLowerCase\EnumToLowerCase.EnumWithPrefixGenerator\Unity.AppUI.Unity.AppUI.UI.AssetTargetField.GetSizeUssClassName.gen.cs(3,5): error CS0246: The type or namespace name 'ınternal' could not be found (are you missing a using directive or an assembly reference?)}}

{{EnumToLowerCase\EnumToLowerCase.EnumWithPrefixGenerator\Unity.AppUI.Unity.AppUI.UI.ToastVisualElement.GetNotificationStyleUssClassName.gen.cs(3,5): error CS0246: The type or namespace name 'ınternal' could not be found (are you missing a using directive or an assembly reference?)}}

{{EnumToLowerCase\EnumToLowerCase.EnumWithPrefixGenerator\Unity.AppUI.Unity.AppUI.UI.ToastVisualElement.GetNotificationStyleUssClassName.gen.cs(3,14): error CS0102: The type '<invalid-global-code>' already contains a definition for ''}}